Rotary pump or the like



J. T. RYAN ROTARY PUMP 0R THE LIKE Flled Oct 25 1924 Feb. 23 1926.

Feb. 23 192s. 1,574g172 J. T. RYAN ROTARY PUMP OR THE LIKE Filed Ooi, 25, 1924 3 Sheets-Sheet 2 Feb. 23 1926.

A. J. T. RYAN ROTARY PUMP. ox THE LIKE Filed oct. 25, 1924 resalta est. as, leze. i

Unirse stares JAMES. frfnYaiv, or FRANKFQRT, KENTUCKY.

no'ranir PUMP on 'rrrn LIKE.

Application filed October 25, 1924. Serial No. 745,843.

[o all 'whom t may concern:

Be it known that l, JAMES "l". RYAN, a citi# zen oi' the United. States, residing at Franktort, in the county ot Franklin and State O Kentucky, have .invented certain new and useful improvements in Rotary Pumps or the like, ot which the iolloiy'in(r isa specilication.

rlhe invention relates'to pumps, and has as an object the provision ot a rotary pump which may be operated in a well in thel space usually devoted to the well casing. 1t Vde-Kv sired, the apparatus maybe placed inside an ordinary well casino'. f

An object ot the invention is the provision of a rotary pump having a novel torni ot centrifugal piston, which piston may be utilized in Huid pressure operated motors as well as pumps. Y

A further object of the invention is the provision of a rotary pump which may be operated in stages, and wherein one pump 'l'eeds the next higher stage, so as to reduce the hydraulic head upon each individual pump.

Further objects ot the invention will appear from the following description when read in connection with the accompanying drawings showing illustrative embodiments ofthe invention, and wherein Fig. 1 is acentral section, partly in 'eleva-v tion, showing the invention applied to two stages. v

Fig. 2 is a like section ot the lower stage. Figs. 3 and t are horizontal sections on the lines 3, and t, 4e respectively ot Figure, 2.

Fig. 5 is a detail, horizontal section showing' a modified torni ot rotor utilizing a plurality ot valves. Fig. G is a side elevation of the rotor of Figs. 1 to #l inclusive.

Fie'. 7 is a. vertical section ot" the rotor on the line 7, 'i of Fig. (i.

Fig. 8 is a central `vertical section of a horizontal form of the invention.

Fig. 9 is a detail sectional view on the line 9, 9 of Fig. 8.

F'g. 1() is a section corresponding to 8 ot a still further modilication and Fig. 11 is a perspective view of the piston.`

the surface ot the rotor-1a.'

formed Aol lengths ot' pipe 13 having screw threaded connect-ion with rotors le.. Each rotor 1li isgshownas formed eta cylindrical body having' a concave recess lshown most clearly on Fig. "et, and a rod 1G extending longitudinally ot the` recess.` ylhe rod '16 may be desirably securedfto the body 14; by

seatingin the recess 17 at each end ot the depression 15 and by being secured therein by means ot bolts 18, 19.

fr piston 20'is shown as formed with an arcuate outline, (one surface fitting the rodv laiid the opposite surface fitting tliebctf toml of the recess 15. The cndsof the pistons20 are'tormed as illustrated so ,thatv when the rotor is Vin a position wherein the valve lis entirely housed in the recess 15 the ends thereof may be substantiallyilush with The arcuate extensions 90 ot' the piston 20, Ashown most clearly in Fig. 11, act to guide the piston in its slidingl motion.

The rotor Y14 is shown as mounted for revolution ina cylinder 21 or 22, the former being the iorm of cylinder where butone stage ot the pump is used, or the lowest stage ot a multistagepump. In each case the rotor 121` is concentric with the exterior of the cylinder 21, and rotates in a cylindrivcal cavity. 23 formed eccentric with the body oi the cylinder so as to torni a1 crescent shaped cavii'zy'y between the yrotor and the cylinder. i y Y lnlet ports 2el'are shown in theouter wall ot the cylinder 21 and in the partition 25 ci' lthe cylinder `22. Outlet ports26 are shown in the partition 27 ot both'cylinders 21 and 22,

To connect the cylinders 21, 22 with the casing v1() the ends ot the cylinders are shown v as formed with an vinterior screw thread 28 engaging exterior Screw threads on a coupling member 29, which latter has screw threaded engagement 'with the casing 10. A passage 30 is shown in each of the couplings 29 to permit the upward flow ot water passing` ports 26, the passages having communication with the cavities 31 betweenthe outer -wall of the cylinder 21, 22 and the partition 1 Itdesired, ,al bushing A33 maybe placed adjacent the top of the Well or at other points between the individual pumps to steady the motion of the rotating member 11,

and if suoli bushings areprOvided each lisV formed with a channel 34- to permit the flow of fluid upwardly within thecasing 10; An outlet 35 is shown for the fluid at the top of the casing.

To prevent Athe back iiow of fiuidinto the cavity 23 and out of the 'intake ports 24, after the piston 2O has swept past ther-fluid ports 26, acheck valve in the form of a iiat valve 36 isshoivn, beingmost clearly disclosed 1n Fig. at. In the embodiment of the vinvention .employing a `plurality of pistons a check valve will be of less importance, if

'Y needed.

If desired, a cavity l5, shown as cylindrical in form, may be provided in the body of the Lrotor 14, to preserve the dynamic balance by compensating for the material left lout ofthe cavity 15 and because of the space 46 in the piston 20. `The latter space is provided in the piston 2O to unha-'lance the valve, whereby 'the centrifugal force .vill

tion of the piston 2O about therod 16 outside of the body of the rotor. `The pressure of Ythe, piston20 against the Vliquid in the'cavi ty 23 by virtue of Whichfthe Water is vcaused to pass through the pump, is borne by the surface of the recess 15, and kdoes not tend `to retract the valve vinto the recess, because of the fluid pressure on the surface 92.

In the form of the invention 4shown in Fig. 5 a plurality of pistons V20 are illustrated, and oil conduits l38 are shown to lubricate the Lpiston retaining rods The oiling device consists of a central oil conduit in the rotor 14. Withsmaller radial oil conduits extending near the ends of the rotor to suitable oil holes the piston retaining rods. Communicating with .the above radial conduits are oil vholes extending 'lengthwise of the rods and feeding to the desired points on the surface betvvee'n the ypistons Q0 .and the rod. Itis understood that lmeans of lubricating `rthe rod flrictional surfaces Willnot be necessary eXcept Where the invention is used as a blower 'or;moto1.

.Infthe form `of the horizontal device shown in Fig. 8 -a modified form -of rotor is shown at Tl, for use With larger pumps -or motors, and isindicated as in theforin lof a -hollovv casing having arcuate Walls 7 5 for delimit-A ingk the piston recesses, andend Walls 76 hav- Ving central openings therein to receive the shaft 77 which is keyed thereto. The piston rods 78 are shoivna's secured to the ends 76 by means of screws 79. It will be noted that lthellxistonrod is cut away as illustrated at 51 in Figs. .4, 5, S and 10, to permit the pumping action lof the piston to be effective when the piston recedes into the cavity 15 at the end of its stroke. lgpulley 8O is'shovm mounted upon the lshaft 7.7, the end of which shaft is carried in a journalSl upon a standard 82, carried by the base S3. In this form of the invention the inletpipev when used asa pump isshou'n ait-84E and the outlet pipe at 85.

The forni of the device shovvn in Fig. 10 dillers from that in Figs. 8 and S) by the fact that the interior of the cylinder is formed .on the arcs of different circles, the circles intersecting but not being :tangent at any7 Joint.v 'With thisform of device the the rotor at a. ypoint adjacent the fluid intake port, the cavity ahead of the piston is at its greatest volume, and the volume. thereof in 'front of the piston is vreduced until the outlet po-rt is passed, whereby the piston sweeps fluid to and thro ugh the outlet ports.-

Minor changes may be made in the physical embodiment of Vthe invention, and the particular form of rotor and piston may be utilized in `either a pump or motor Without departing from thel spirit of the invention.

I claim: y

1. 4In a device of the class descrit 4d a cylinder, a rotor eccentrically mounted therein and having a. piston-receiving recess, an arcuate piston seating in said recess and adaptedto be projected therefrom by ccntrifugal force, and a piston rod extending transversely of said recess acting to retain said piston therein.

2. In a device of the class described, in combination, a cylinder, a rotor mounted eccentrically to revolve therein.l an arciuate piston slidably` carried by said rotor to be pressed against the Wall of the cylinder by centrifugal force, said piston subte-riding an are of said rotor when fully housed therein and inlet and outlet ports for salidcylinder. 3. In a device of the class described, in combination, a cylinder, a rotor mounted eccentrically in relation -to said cylinder yto revolve therein, :arcuate Vpistons slidably mount- -ed in said vrotor and 'when fully housed therein each subtending an 'arc of the rotor,

llO

said pistons adapted to be pressed aga-inst the wall of the` cylinder by centrifugal force and the fluid pressure, and inlet and outlet pf lts for said cylinder'. i

l. ,a rotary pump comprising, in combination, a. cylinder, a rotor eccentrically mounted therein, a centrifugally actuated piston slidably carried by said rotor, an inlet port and an outlet port communicating with said cylinder, the latter opening into an outlet chamber, a cylinder head having a passage communicating witl said chamber.

5. In a device of the class described, in combination, a cylinder, a. rotor eccentrically mounted therein, an arcuate piston slidably carried by said rotor and when completely housed therein occupying a position substantially symmetrical therewith, and means to imbalance the centrifugal force upon said piston. Y y

6. ln a device of the class described, in combination, a cylinder, a rotor eccentrically mounted therein, arcuate pistons slidably carried by said rotor and when completely housed therein subtending arcs of said rotor, each of said pistons having a cavity in one edge to unbalance the centri ugal force thereon, and inlet and outlet` ports for said cylinder.

7. .ln a device of the class described,in combination, a cylinder, a rotor eccentrically mounted therein, an arcuate piston slidably carried by said rotor and when completely housed therein occupying a position substantially symmetrical therewith, a piston retaining rod carried by the rotor within the arc of the piston, and inlet and outlet ports for said cylinder.

8. In a device of the class described, a piston comprising` an elongated body arcuate transversely of its length and having arcuate extensions at its ends.

9. ln a device of the class described, in combination, a cylinder, a cylindrical rotor mounted to revolve therein eccentric thereto and having a` recess in i-ts surface, a rod spanning said recess, the outer surface of said rod lying` within the circumference of the rotor, the inner surface of the rod concentric with the wall of the recess, an arcuate piston slidable within said recess and behind said rod adapted to be pressed against the wall of said cylinder by centrifber being eccentric to said journal, a rotor f mounted in saidcylinder upon a rod revolving in Vsaid journal, a piston slidably mounted in said rotor adapted to be pressed against the cylinder wail byr centrifugal force and `fluid pressure, inlet and outlet ports for said cylinder, the latter communieating with a chamber in a wall of said cylinder, and said head having a port for passage of fluid from said chamberto the in-V terior of a pipe connected to vthe head.

l1. A rotary pump comprising, in combination, a cylinder having an eccentric chamber therein and an outlet chamber ina wall thereof, cylinder heads for said cylinder, one of said heads having external threads to connect with a pipe andan out-- let passage to pla-ce said outlet chamber in communication with said pipe, a pump rod journaled in said threaded head, arotor cony nected to said rod and a centrifugally operated piston carried by said rotor.

12. A two stage rotary pump comprising, in combination, a first stage pump connected to the end of a pipe comprising a head for said pump, a pump rod journaled in said head, a roto-r operated by said rod, said head having an outlet port communicating with the interior of said pipe, a second stage pump comprising a lower head connected to said pipe and having a port therethrough feeding the second stage pump, said pump rod journaled in said lower head, a cylinder connected to said lower head having inlet and outlet chambers formed in its Walls, the former communicating with said last named port, a rotor revolving in said second stage cylinder connected at its lower end 4to said puinprod and at its upper end to a continuation thereof, an upper head for` said second stage cylinder having an' outlet port placing the outlet chamber in communication with the pipe connected thereto, the punp rod journaled in said last-nained hea Y JAMES rr. RYAN. 

